Lock device



Aug. 29', Rfs. IGICLD, 5

L LOCK DEVICE Filed Sept. 5, 1941 Y INVENTOR ATTORNEYS. A

Patented Aug. 29, 1944 LOCK DEVICE Russell S. Gold, Berlin, Conn., assignor to The American Hardware Corporation, New Britain, Conn., a corporation of Connecticut Application September 5, 1941, Serial No. 409,609

1 Claim.

My invention relates to a lock and more particularly to means for assuring proper alignment of the lock case with a knob, spindle and rosette.

It is well known that quite often mechanics fail to align the knob rosette properly with the knob spindle in a lock. The consequence is that the knob binds in the rosette and the latch spring is not strong enough to overcome the friction caused by binding and the latch fails to operate properly, often sticking in retracted position.

It is the principal object of my invention to provide improved means for aligning a knob rosette with the lock case.

Other objects and features of the invention ,will be hereinafter pointed out or will become apparent to those skilled in the art.

In the drawing which shows, for illustrative purposes only, preferred forms of the invention- Fig. 1 is a fragmentary sectional view of a door with latch applied thereto and illustrating features of the invention;

Fig. 2 is a rear elevation of the latch case shown in Fig. 1, and illustrates features of the, invention;

Fig. 3 is a fragmentary view similar to Fig. 1, illustrating a slight modification; and

Fig. 4 is a top plan view of the lock case shown in Fig. 3.

The invention will be described as embodied in a so called tubular lock, which is inserted in a bored hole extending inwardly from the edge of the door. The lock case 5 may be of any usual or desired form and is provided with a knob spindle 6 to be attached to knobs 1-8. The

knob shanks are designed to freely fit in the bores 9 of the rosettes H). The rosettes in the form shown are circular and the bores are defined by inturned cylindrical portions or sleeves II, as will be understood. The rosettes themselves may be fastened to the door, as by means of wood screws l2.

The structures as so far described are well known in the art and in the application of r0- settes, such as the rosettes l0, mechanics sometimes fail to center those rosettes properly and the knobs bind in the rosettes. My invention is particularly in the piloting or centering means to assist the mechanic in centering the rosettes relatively to the lock case.

In the form shown in Figs. 1 and 2 the lock case is provided concentrically of the spindle 6 with an upstanding, preferably cylindrical, boss l3. The lock case may be slabbed off at the sides and the boss or bosses need extend up no farther than the normal diameter of the case. A sleeve I4 is designed to slidably fit over the upstanding boss I3 and to interfit with the rosette, preferably by being slidably fitted in the bore 9 thereof. The sleeve I4 is preferably a friction fit in the bore of the rosette and may be forced inwardly by the mechanic so as to engage the boss l3, regardless of the width of the door (within the limits for which the particular rosette and sleeve are designed).

The parts are so designed that, for the thinner door, the outer end of the sleeve is sufficiently below or out of the way of the inner end of the knob shank, that there will be substantially no frictional interference between the two.

It will be seen that by means of the sleeve and boss 13 the rosette may be very accurately centered and held in centered position while the mechanic fastens the rosette to the door by means of the screws 12. When the rosette is properly centered the knob shank will rotate freely in the rosette and will not bind.

In the form shown in Figs. 3 and 4 the lock case, instead of being provided with an upstanding boss l3 on the slabbed-off side, is provided with a shallow bore l5 into which the sleeve I4 is designed to fit securely, as will be clear from Fig. 3. Other constructions may suggest themselves to those skilled in the art.

While the invention has been described in considerable detail and preferred forms illustrated it is to be understood that many changes and modifications may be made within the scope of the invention as defined in the appended claims.

I claim:

-In a device of the character indicated, a lock case having an upstanding generally cylindrical boss thereon, a rosette, and a sleeve within the bore of said rosette, said sleeve being of a size to interfit with said generally cylindrical boss on said lock case whereby said sleeve when placed over said boss by means of said rosette serves to pilot said rosette relatively to said lock case.

RUSSELL S. GOLD. 

